Well, remember the bookshelves in skyrim? They had the ability to randomize which books spawned on shelves, over a decade ago. Actual physics enabled books on physical shelves, that were randomly spawned. I never really noticed, but I was going back through Skyrim modding again and I noticed the level lists had that.
This isn’t super complicated.
there’s “this building has the exact same plan / is prefabricated” and there’s “this building has the exact same objects put on the exact same furniture in the exact same spot”. if you experienced the former you’d be mumbling about how boring the federation is or something. if you experienced the latter you’d seek psychiatric help.